CN201265735Y - Automatic control system for oil pumps - Google Patents
Automatic control system for oil pumps Download PDFInfo
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- CN201265735Y CN201265735Y CNU2008201650740U CN200820165074U CN201265735Y CN 201265735 Y CN201265735 Y CN 201265735Y CN U2008201650740 U CNU2008201650740 U CN U2008201650740U CN 200820165074 U CN200820165074 U CN 200820165074U CN 201265735 Y CN201265735 Y CN 201265735Y
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- oil pump
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- level switch
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Abstract
The utility model belongs to an automatic control system of an oil pump unit, which belongs to the technical field of a circulating lubrication system outside a hydropower station and comprises main oil pump electric motors M1 and M2 and an auxiliary oil pump electric motor M3, wherein main circuits of the electric motors are supplied by a three-phase four-wire alternating current of 380 voltages led by switches Q1, Q2 and Q3, and the electric motors are respectively connected in series with fuses FU1, FU2 and FU3, alternating current contactors NM1, NM2 and NM3 and thermal relays FR1, FR2 and FR3; the main circuits are in circuit connection with a control circuit which is controlled by an alternating current of 220 voltages, and a breaker QS1 and a time relay KT1 are connected with and arranged on the control circuit. The automatic control system is respectively and directly controlled by main contacts of the alternating current contactors to start and stop, and the control circuit controls the three oil pump electric motors to sequentially start and stop so as to effectively prevent an oil pump from being damaged due to frequent starts and stops, ensure the safe operation of the unit and improve the operation efficiency of the system.
Description
Technical field
The utility model belongs to water power plant outer circulation lubrication system technical field, is specially the automatic control system that is used to control a kind of oil pump group that oil pump motor starts or stops.
Background technique
Water power plant outer circulation lubrication system is the important step of hydraulic generator unit safe operation, and it is mainly used in high rotating speed and the big capacity horizontal hydrogenerator group bearing lubrication system, and system is played the lubrication protection effect.The fault of bearing lubrication system tends to cause the accidental shutdown of unit, causes burn bearing shell, main shaft etc. what is more, thereby makes the paralysis of whole power station, causes the loss of enterprise and bad social influence.
At present, existing a plurality of producers have manufactured and designed water power plant outer circulation lubrication system both at home and abroad, and the circulatory system often adopts the oil pump DFF Direct Fuel Feed to give bearing lubrication, like this, because system is single oil pump, use the oil mass requirement for what satisfy many units, often select the oil pump of maximum consumption for use, and during the operation of actual power station, 1 or 2 machine operations often appear, probability of all installations operation simultaneously are lower, and like this, the capacity that will cause oil pump is excessive and cause the waste of the energy.
The model utility content
At the above-mentioned problems in the prior art, the purpose of this utility model is to design the technological scheme of the automatic control system that a kind of oil pump group is provided, can not only ensure the safe operation of unit, and improved the operational efficiency of system, and be provided with the main oil pump automatic switching function, can prevent effectively that a certain table oil pump starting is frequent and fragile.
The automatic control system of described a kind of oil pump group, it is characterized in that comprising main oil pump motor M1/M2 and emergency bearing oil pump motor M3, the main circuit of motor is introduced 380V four wire three phase AC-powered by switch Q1/Q2/Q3, each motor is connected with fus FU1/FU2/FU3, A.C. contactor KM1/KM2/KM3, thermorelay FR1/FR2/FR3 respectively, main circuit is connected with the control circuit circuit, control circuit adopts the control of 220V Ac, connects on it circuit breaker Q S1, time relay KT1 are set.
The automatic control system of described a kind of oil pump group, it is characterized in that described control circuit comprises that liquid-level switch 41WX-1 connects with relay K AUX1, liquid-level switch 41WX-2 connects with relay K AUX2, liquid-level switch 42WX connects with relay K AUX3, connect mutually with the relay K AUX4 that is connected in parallel, KAUX5, KAUX6 after liquid-level switch 41WX-3, the liquid-level switch 43WX parallel connection, A.C. contactor KM1/KM2/KM3 that connects in the main circuit and thermorelay FR1/FR2/FR3 and above-mentioned each series circuit all are connected in parallel.
The automatic control system of described a kind of oil pump group is characterized in that the A.C. contactor KM1/KM2/KM3 and the thermorelay FR1/FR2/FR3 that connect in the main circuit connect with throw over switch 1KK/2KK/3KK respectively, and then is connected in parallel with relay K AUX7.
The automatic control system of described a kind of oil pump group is characterized in that on the described A.C. contactor KM1/KM2/KM3 connecting respectively tutorial light PL1/PL2/PL3/PL4/PL5/PL6 is set.
The automatic control system of described a kind of oil pump group, it is characterized in that described control circuit also comprises shows that stream signaling switch 45SLX and 46SLX series connection back is in parallel with liquid-level switch 41WX-3, liquid-level switch 43WX, connects mutually with the relay K AUX4 that is connected in parallel, KAUX5, KAUX6 again.
Described water power plant outer circulation lubrication system comprises top petrol tank, the cold oil device, oil supplying device and unit bearing means, wherein the top petrol tank filler opening is connected with the oil supplying device pipeline by the cold oil device, the top petrol tank oil outlet is connected with unit bearing means filler opening pipeline, the oil spilling mouth of top petrol tank, floss hole is connected with the oil supplying device pipeline, unit bearing means oil outlet is connected with the oil supplying device pipeline, the oil level signal device is set in the top petrol tank, cooling water is set in the cold oil device shows the stream advertiser, the oil level signal device is set in the oil supplying device, main oil pump motor and emergency bearing oil pump motor.
The automatic control system of above-mentioned a kind of oil pump group; main oil pump motor and emergency bearing oil pump motor are respectively equipped with short-circuit protection and overload protection; its starting and the direct control that stops to be subjected to respectively the A.C. contactor main contact; control circuit is to three table oil pump motor sequential firings and stop to control; can prevent effectively that a certain table oil pump starting frequently is damaged; ensure the safe operation of unit, improved the operational efficiency of system.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is the control circuit schematic diagram of oil pump motor;
Fig. 3 is the main circuit schematic diagram of oil pump motor;
Among the figure: 1-control circuit, 2-main circuit, 301-main oil pump motor, 302-main oil pump motor, 303-emergency bearing oil pump motor.
Embodiment
The utility model is described in further detail below in conjunction with Figure of description.
As shown in the figure, this automatic control system comprises main oil pump motor M1/M2-301/302 and emergency bearing oil pump motor M3-303, the main circuit 2 of motor is introduced 380V four wire three phase AC-powered by switch Q1/Q2/Q3, each motor is connected with fus FU1/FU2/FU3, A.C. contactor KM1/KM2/KM3, thermorelay FR1/FR2/FR3 respectively, connects respectively on the described A.C. contactor KM1/KM2/KM3 tutorial light PL1/PL2/PL3/PL4/PL5/PL6 is set.Fus FU1/FU2/FU3 is a short-circuit protective device; thermorelay FR1/FR2/FR3 is an overload protection electrical equipment; three motor are across-the-line starting, and can only unidirectionally turn round, the starting of each motor and the direct control that stops to be subjected to respectively A.C. contactor KM1/KM2/KM3 main contact.
In the top petrol tank in the described water power plant outer circulation lubrication system oil level signal device is set, cooling water is set in the cold oil device shows the stream advertiser, the oil level signal device is set in the oil supplying device.Normal when the top petrol tank oil level, arrive first lower limit, second lower limit, the 3rd lower limit and arrive the action that all can send the SC sigmal control liquid-level switch in limited time down.Prescribe a time limit when oil supplying device arrives down, the oil level signal device sends the action of SC sigmal control liquid-level switch.When cutting off the water supply in the cold oil device, cooling water shows that the stream advertiser sends the action that SC sigmal control is shown stream signaling switch 45SLX and 46SLX.
When arriving first time, top petrol tank prescribes a time limit, liquid-level switch 41WX-1 closure, and relay K AUX1 gets electric and self-locking, and A.C. contactor KM2 gets electric and self-locking, and main oil pump motor M1-302 starts, and oil pump run indicator PL3 lamp is bright, and oil pump stops tutorial light PL4 and goes out.
When arriving second time, top petrol tank prescribes a time limit, liquid-level switch 41WX-2 closure, and relay K AUX2 gets electric and self-locking, and A.C. contactor KM1 gets electric and self-locking, and main oil pump motor M2-301 starts, and PL1 is bright for the oil pump run indicator, and oil pump stops tutorial light PL2 and goes out.
When arriving the 3rd time, top petrol tank prescribes a time limit, liquid-level switch 42WX closure, and relay K AUX3 gets electric and self-locking, and emergency bearing oil pump motor M3-303 starts, and PL5 is bright for the oil pump run indicator, and oil pump stops tutorial light PL6 and goes out.
When the top petrol tank oil level just often, liquid-level switch 41WX-3 closure, relay K AUX4, KAUX5, KAUX6 get, relay K AUX4, KAUX5, KAUX6 break contact disconnect, A.C. contactor KM1, KM2, KM3 outage, main oil pump motor M1/M2-301/302 and emergency bearing oil pump motor M3-303 outage are withdrawed from, and oil pump stops tutorial light PL2, PL4, PL6 is bright.
Under arriving, the oil level of oil supplying device prescribes a time limit; liquid-level switch 43WX closure; relay K AUX4, KAUX5, KAUX6 get; relay K AUX4, KAUX5, KAUX6 break contact disconnect; A.C. contactor KM1, KM2, KM3 outage; main oil pump motor M1/M2-301/302 and emergency bearing oil pump motor M3-303 outage are withdrawed from, and unit disorderly closedown oil pump stops tutorial light PL2, PL4, PL6 is bright.
When the cooling water of cold oil device is cut off the water supply; show that stream signaling switch 45SLX and 46SLX disconnect; relay K AUX4, KAUX5, KAUX6 get; relay K AUX4, KAUX5, KAUX6 break contact disconnect; A.C. contactor KM1, KM2, KM3 outage; main oil pump motor M1/M2-301/302 and the outage of emergency bearing oil pump motor M3-303 Oil pump electrical machinery are withdrawed from, and unit disorderly closedown, oil pump stop tutorial light PL2, PL4, PL6 is bright.
Relay K AUX7 is a main oil pump automatic switchover relay, mainly use with for preventing frequent and fragile setting of a certain table oil pump starting, and main oil pump motor M1/M2-301/302 automaticallyes switch when realizing starting once more.Its working principle is: when arriving first time, top petrol tank prescribes a time limit, and liquid-level switch 41WX-1 closure, relay K AUX1 gets electric and self-locking, and A.C. contactor KM2 gets electric and self-locking, and main oil pump motor M2-302 starts; This moment, relay K AUX7 got electric and self-locking, for fuel primer pump is next time prepared, along with the top petrol tank oil level rises to normally, liquid-level switch 41WX-3 closure, relay K AUX4, KAUX5, KAUX6 get, relay K AUX4, KAUX5, KAUX6 break contact disconnect, A.C. contactor KM2 outage, and main oil pump motor M2-302 outage is withdrawed from; When top petrol tank arrives first time in limited time once more, liquid-level switch 41WX-1 closure, relay K AUX1 gets electric and self-locking, this moment is because relay K AUX7 is in the break contact disconnection, moving together contact make and break state, the old friend flows contactor KM1 and gets electric and self-locking, and another main oil pump motor M1-301 starts, and has realized the automatic switchover of oil pump motor.Throw over switch 1KK, 2KK, 3KK can realize automatically and manual switchover that oil pump moves and stops all to have tutorial light to indicate.
Claims (5)
1, a kind of automatic control system of oil pump group, it is characterized in that comprising main oil pump motor M1/M2 (301,302) and emergency bearing oil pump motor M3 (303), the main circuit of motor (2) is introduced 380V four wire three phase AC-powered by switch Q1/Q2/Q3, each motor is connected with fus FU1/FU2/FU3, A.C. contactor KM1/KM2/KM3, thermorelay FR1/FR2/FR3 respectively, main circuit (2) is connected with control circuit (1) circuit, control circuit (1) adopts the control of 220V Ac, connects on it circuit breaker Q S1, time relay KT1 are set.
2, the automatic control system of a kind of oil pump group as claimed in claim 1, it is characterized in that described control circuit (1) comprises that liquid-level switch 41WX-1 connects with relay K AUX1, liquid-level switch 41WX-2 connects with relay K AUX2, liquid-level switch 42WX connects with relay K AUX3, connect mutually with the relay K AUX4 that is connected in parallel, KAUX5, KAUX6 after liquid-level switch 41WX3, the liquid-level switch 43WX parallel connection, the A.C. contactor KM1/KM2/KM3 of series connection and thermorelay FR1/FR2/FR3 and above-mentioned each series circuit all are connected in parallel in the main circuit (2).
3, the automatic control system of a kind of oil pump group as claimed in claim 1, the A.C. contactor KM1/KM2/KM3 and the thermorelay FR1/FR2/FR3 that it is characterized in that series connection in the main circuit (2) connect with throw over switch 1KK/2KK/3KK respectively, and then are connected in parallel with relay K AUX7.
4, the automatic control system of a kind of oil pump group as claimed in claim 1 is characterized in that on the described A.C. contactor KM1/KM2/KM3 connecting respectively tutorial light PL1/PL2/PL3/PL4/PL5/PL6 is set.
5, the automatic control system of a kind of oil pump group as claimed in claim 1, it is characterized in that described control circuit (1) also comprises shows that stream signaling switch 45SLX and 46SLX series connection back is in parallel with liquid-level switch 41WX-3, liquid-level switch 43WX, connects mutually with the relay K AUX4 that is connected in parallel, KAUX5, KAUX6 again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201650740U CN201265735Y (en) | 2008-09-27 | 2008-09-27 | Automatic control system for oil pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201650740U CN201265735Y (en) | 2008-09-27 | 2008-09-27 | Automatic control system for oil pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201265735Y true CN201265735Y (en) | 2009-07-01 |
Family
ID=40832103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201650740U Expired - Fee Related CN201265735Y (en) | 2008-09-27 | 2008-09-27 | Automatic control system for oil pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201265735Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101816991A (en) * | 2010-04-16 | 2010-09-01 | 泰博制钢股份有限公司 | Card wire online automatic oil-spraying device |
| CN102778847A (en) * | 2012-07-06 | 2012-11-14 | 西安陕鼓动力股份有限公司 | Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system |
| CN105697971A (en) * | 2014-11-24 | 2016-06-22 | 北京南口轨道交通机械有限责任公司 | Electrical control system |
| CN106015894A (en) * | 2016-06-24 | 2016-10-12 | 广西三威林产工业有限公司 | Bearing bush lubrication system |
-
2008
- 2008-09-27 CN CNU2008201650740U patent/CN201265735Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101816991A (en) * | 2010-04-16 | 2010-09-01 | 泰博制钢股份有限公司 | Card wire online automatic oil-spraying device |
| CN102778847A (en) * | 2012-07-06 | 2012-11-14 | 西安陕鼓动力股份有限公司 | Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system |
| CN102778847B (en) * | 2012-07-06 | 2015-07-08 | 西安陕鼓动力股份有限公司 | Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system |
| CN105697971A (en) * | 2014-11-24 | 2016-06-22 | 北京南口轨道交通机械有限责任公司 | Electrical control system |
| CN105697971B (en) * | 2014-11-24 | 2018-08-21 | 中车北京南口机械有限公司 | Electric control system |
| CN106015894A (en) * | 2016-06-24 | 2016-10-12 | 广西三威林产工业有限公司 | Bearing bush lubrication system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20100927 |